◎ 题干
We must keep our room clean. Dirt and disease go _____ you know.
A.from time to timeB.hand in hand
C.step by stepD.one after another
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“We must keep our room clean. Dirt and disease go _____ you know.A.from time to timeB.hand in handC.step by stepD.one after another…”主要考查了你对  【动词短语】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。